Which profession is responsible for a planes design?
a)aerospace engineering
b)aerospace mechanic
c)pilot
d)flight attendant

How does an observation about an object differ from an inference about that object

Why does the liquid rise up through the dip tube when the valve is open

Atruck travels at an average speed of 70 km/hr. if it travels 100 km in the first hour, how far will it go the second hour of a 2 hour trip? if you could also give me the steps that would great.